!] [baby crying] the great thing about a subaru is you don't have to put up with that new car smell for long. introducing the versatile, all-new subaru forester. love. it's what makes a subaru, a subaru. >>> now, remember, guys, the two boxes on your truck have been wrapped with detonating cord. if your package reaches 25-gs, it will blow sky high. let's do this. here comes the blue one. here we go. >> oh, my gosh. >> this is insane. >> slide, baby, slide. >> oh, my. that was a -- that was from the series premiere of discovery channel's "the big brain theory" pure genius. i want to see how that ends. with us here now, the host of the show, former national cochair of the obama campaign, kal penn. the concept of the show is fantastic. >> it's an awesome concept. we found ten of the best young american engineers out there. they compete in a challenge show, similar to top chef, engineer challenges. they have a limited amount of time, budget, a lot of these guys have worked on everything from the mars rover to the nuclear submarines. it's been fun. >> so this we're looking at is -- what'